{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\toprule
            &\multicolumn{2}{c}{Compliance}             &\multicolumn{2}{c}{Similarity}             \\\cmidrule(lr){2-3}\cmidrule(lr){4-5}
            &\multicolumn{1}{c}{\specialcell{Before\\2009/10\\(1)}}&\multicolumn{1}{c}{\specialcell{2009/10\\Onwards\\(2)}}&\multicolumn{1}{c}{\specialcell{Before\\2009/10\\(3)}}&\multicolumn{1}{c}{\specialcell{2009/10\\Onwards\\(4)}}\\
\midrule
Neighbor $\times$ Different Party & .0075 & .00076 & .0078 & .0056 \\ (proximity effect on bipartisanship) & [.037]** & [.86] & [.021]** & [.19] \\ & \{.029\}** & \{.86\} & \{.018\}** & \{.26\} \\ \\[-5pt] Neighbor $\times$ Same Party & -.00057 & .014 & .00037 & .012 \\  & [.93] & [.19] & [.96] & [.34] \\ & \{.94\} & \{.27\} & \{.96\} & \{.37\} \\ \\[-5pt] Same = Different & [.24] & [.25] & [.3] & [.63] \\ & \{.35\} & \{.35\} & \{.39\} & \{.66\} \\ \\[-5pt] \hline Observations & 22907 & 12352 & 22907 & 12352 \\ Session $\times$ Party Pair $\times$ Strata FE & Y & Y & Y & Y \\ Outcome Mean & .57 & .58 & 2.5 & 2.5 \\ Outcome S.d. & .11 & .16 & .12 & .22 \\ \toprule \multicolumn{5}{p{13.5cm}}{\footnotesize \textit{Notes:} Compliance is the proportion of times the two MPs in a pair vote the same way in a given session. Similarity is the average vote similarity between the two MPs in a pair. Neighbor is a dummy variable equal to one if the MPs in the pair are randomly assigned to sit next to each other during that session. Same Party is equal to one if both MPs in the pair are in the same party for that session. Dyadic-robust p-values are in square brackets. Randomization inference p-values (1000 draws) are in curly brackets. Special sessions and a short session (2017) are excluded. Strata FE are dummy variables for whether both MPs in a pair were pre-assigned seats, one MP in a pair was pre-assigned a seat, or neither MP in a pair was pre-assigned a seat. *** p<0.01, ** p<0.05, * p<0.1.} \\ \end{tabular} }
